Method And System For Providing A Proxy Media Service - Patent 8145249

This application is related to U.S. patent application Ser. No. 11/267,645, entitled "METHOD AND SYSTEM FOR PROVIDING A PUSH-TO-TALK COMMUNICATION SESSION", filed concurrently with the present application, and to U.S. patent application Ser. No. 11/267,693, entitled "METHOD AND SYSTEM FOR PROVIDING A PUSH-TO-TALK COMMUNICATION SESSION USING A CONTROL ENDPOINT,", filed concurrently with the present application.TECHNICAL FIELD OF THE INVENTION This invention relates in general to communication systems and, more particularly, to a method and system for providing a proxy media service.BACKGROUND OF THE INVENTION Many public and private groups, such as security and safety personnel (e.g., police, fire fighters and ambulance drivers) use various communication networks of differing technologies and types for communication. Many networks utilize landmobile radios communicating through push-to-talk technologies. However, communications among different endpoints of different networks such as endpoints of different police, fire or other security networks may be difficult. Collaboration between thedifferent agencies and networks tends to be ad hoc and inefficient. When achieved, it often involves laborious manual intervention. Organizations working towards interoperability solutions include Raytheon JPS Communications, IP Blue, Twisted Pair,M/A-COM, Motorola and Cisco Systems. In addition, many networks of public and private groups, such as security and safety personnel, utilize push-to-talk technology to enable communications among members of a particular group. Groups members may communicate using push-to-talkendpoints, such as land mobile radios. These endpoints are typically half duplex endpoints such that they cannot support both outgoing and incoming communications at one time.SUMMARY OF THE INVENTION The present invention on provides a method and system for providing a proxy media service that substantially eliminates or reduces at least some of the disadvanta